— Kitty, do you know ______?
— Sure, about forty minutes.
| A．when did their class meeting begin. |
| B．where their class meeting was held |
| C．how often their class meeting is held |
| D．how long their class meeting will last |
It’s a fine day _____ a walk.
A. in B. of C. for
I usually come to school _______.
A. by a bus
B. on foot
C. by foot
Who knows the key ____ Exercise 1? Put up your hands.
A. to B. of C. with
I ________ at this time of yesterday.
A. started do my homework
B. started my homework
C. started to do my homework
_____ they are brothers, they don’t look like each other at all.
A. Because B. Though C. When